<!DOCTYPE html>
<html>

	<head>
		<meta charset="UTF-8">
		<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
		<title>example</title>
		<link rel="stylesheet" type="text/css" href="../build/bootstrap/css/bootstrap.css" />
		<script src="../build/jquery/jquery-3.0.0.js" type="text/javascript" charset="utf-8"></script>
		<script src="../build/bootstrap/js/bootstrap.js" type="text/javascript" charset="utf-8"></script>
		<style type="text/css">
			.row>div {
				border-right: 1px solid hotpink;
				border-top: 1px solid lightseagreen;
				background: #cef;
			}
			
			.row>div:hover {
				background: #C4E3F3;
			}
		</style>
	</head>

	<body>
		<div class="container-fluid">
			<div class="row">
				<div class="col-xs-9">.col-xs-9</div>
				<div class="col-xs-4">.col-xs-4<br>Since 9 + 4 = 13 &gt; 12, this 4-column-wide div gets wrapped onto a new line as one contiguous unit.</div>
				<div class="col-xs-6">.col-xs-6<br>Subsequent columns continue along the new line.</div>
			</div>
		</div>
	</body>

</html>